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41篇 您的检索式:作者名="David ED"
    题名 作者 年代 出处 被引量
1赤霉素及机械处理的相互作用对破除Sandersonia aurantiaca种子休眠的研究显示文摘在预备试验的基础上,选用了21种促进种子发芽的方法,结果显示,完整的S.aurantiaca种子对任何处理都无响应,砂纸磨擦+近胚根处切除小部分可使种子发芽率提高至11%。以上处理结合300mg/LGA3溶液的使用可破除种子休眠,使种子发芽率提高到69%以上。结果还表明,S.aurantiaca种子发芽的适宜温度为20℃;25℃+16h/d光照及30℃的条件可降低种子的发芽率。研究还对S.aurantiaca种子的吸胀能力以及所含抑制物对生菜种子发芽的影响进行了比较。初步得出,S.aurantiaca种子具有种皮限制和种胚休眠的双重休眠机制,GA3和机械处理的相互作用可破除种子休眠。邹琇莹 David W FOUNTAIN Ed RMORGAN 2003草业学报2003,12,5:13
2Gastro-duodenal disease in Africa: Literature review and clinical data from Accra, Ghana显示文摘Gastroduodenal disease(GDD)was initially thought to be uncommon in Africa.Amongst others,lack of access to optimal health infrastructure and suspicion of conventional medicine resulted in the reported prevalence of GDD being significantly lower than that in other areas of the world.Following the increasing availability of flexible upper gastro-intestinal endoscopy,it has now become apparent that GDD,especially peptic ulcer disease(PUD),is prevalent across the continent of Africa.Recognised risk factors for gastric cancer(GCA)include Helicobater pylori(H.pylori),diet,Epstein-Barr virus infection and industrial chemical exposure,while those for PUD are H.pylori,non-steroidal antiinflammatory drug(NSAID)-use,smoking and alcohol consumption.Of these,H.pylori is generally accepted to be causally related to the development of atrophic gastritis(AG),intestinal metaplasia(IM),PUD and distal GCA.Here,we perform a systematic review of the patterns of GDD across Africa obtained with endoscopy,and complement the analysis with new data obtained on premalignant gastric his-topathological lesions in Accra,Ghana which was compared with previous data from Maputo,Mozambique.As there is a general lack of structured cohort studies in Africa,we also considered endoscopy-based hospital or tertiary centre studies of symptomatic individuals.In Africa,there is considerable heterogeneity in the prevalence of PUD with no clear geographical patterns.Furthermore,there are differences in PUD within-country despite universally endemic H.pylori infection.PUD is not uncommon in Africa.Most of the African tertiary-centre studies had higher prevalence of PUD when compared with similar studies in western countries.An additional intriguing observation is a recent,ongoing decline in PUD in some African countries where H.pylori infection is still high.One possible reason for the high,sustained prevalence of PUD may be the significant use of NSAIDs in local or over-the-counter preparations.The prevalence of AG and IM,were similar or modestly higher over rates in western countries but lower than those seen in Asia..In our new data,sampling of 136 patients in Accra detected evidence of pre-malignant lesions(AG and/or IM)in 20 individuals(14.7%).Likewise,the prevalence of pre-malignant lesions,in a sample of 109 patients from Maputo,were 8.3%AG and 8.3%IM.While H.pylori is endemic in Africa,the observed prevalence for GCA is rather low.However,cancer data is drawn from country cancer registries that are not comprehensive due to considerable variation in the availability of efficient local cancer reporting systems,diagnostic health facilities and expertise.Validation of cases and their source as well as specificity of outcome definitions are not explicit in most studies further contributing to uncertainty about the precise incidence rates of GCA on the continent.We conclude that evidence is still lacking to support(or not)the African enigma theory due to inconsistencies in the data that indicate a particularly low incidence of GDD in African countries.Timothy N Archampong Richard H Asmah Cathy J Richards Vicki J Martin Christopher D Bayliss Edília Botao Leonor David Sandra Beleza Carla Carrilho 2019World Journal of Gastroenterology2019,25,26:3
3Extracts of Flourensia cernua (L): Volatile Constituents and Antifungal, Antialgal, and Antitermite Bioactivities显示文摘Mario Tellez Rick Estell Ed Fredrickson Janine Powell David Wedge Kevin Schrader Mozaina Kobaisy 2001Journal of Chemical Ecology2001,,11:1
4A method of choosing muhiway partitions for classification and decision trees 显示文摘David Biggs Barry De Ville Ed Suen 1991Journal of Applied Statistics1991,,18:1
5Quadriceps tendon ruptures after total knee arthroplasty 显示文摘Ryan ED Arlen DH David G 2005JBJS2005,,:1
6Genome-wide Generation and Systematic Phenotyping of Knockout Mice Reveals New Roles for Many Genes显示文摘Jacqueline K. White Anna-Karin Gerdin Natasha A. Karp Ed Ryder Marija Buljan James N. Bussell Jennifer Salisbury Simon Clare Neil J. Ingham Christine Podrini Richard Houghton Jeanne Estabel Joanna R. Bottomley David G. Melvin David Sunter Niels C. Adams L 2013Cell2013,,2:1
7Are monitoring and evaluation systems adequate to report the programmatic coverage of HIV services among key populations in countries?显示文摘There was no global guidance or agreement regarding when a country has an adequate system to report on the service packages among human immunodeficiency virus(HIV)key populations.This article describes an approach to categorizing the system in a country for reporting the service package among HIV key populations.The approach consists of four dimensions,namely the epidemiological significance,comprehensiveness of the service packages,geographic coverage of services,and adequacy of the monitoring system.The proposed categorization approach utilizes available information and can inform the improvement of the service delivery and monitoring systems among HIV key populations.Jinkou Zhao Sonia Arias Garcia Ed Ngoksin Jesus Maria Garcia Calleja Chinelo Ogbuanu Sandra Kuzmanovska Nicholas Oliphant David Lowrance Nathalie Zorzi Peter M.Hansen Keith Sabin 2019Infectious Diseases of Poverty2019,8,4:1
8The Role of Independence in the Green-Lin Diamond-Dyb- rig Model显示文摘Andolfatto David Ed Nosal Neil Wallace 2007Journal of Economic Theory2007,137,:1
9Prevalence of depression in survivors of acute myocardial infarction显示文摘Brett D. Thombs PhD Eric B. Bass MD MPH Daniel E. Ford MD Kerry J. Stewart ED Konstantinos K. Tsilidis MPH Udita Patel MPH James A. Fauerbach PhD David E. Bush MD Dr. Roy C. Ziegelstein MD 2006Journal of General Internal Medicine2006,,1:1
10Conserved molecular signatures of neurogenesis in the hippocampal subgranular zone of rodents and primates显示文摘Jeremy A. Miller Jason Nathanson Daniel Franjic Sungbo Shim Rachel A. Dalley Sheila Shapouri Kimberly A. Smith Susan M. Sunkin Amy Bernard Jeffrey L. Bennett Chang-Kyu Lee Michael J. Hawrylycz Allan R. Jones David G. Amaral Nenad Sestan Fred H. Gage Ed S. 2013Development2013,,22:1
11Defi- ning the value of future research to identify the pre- ferred treatment of meniscal tear in the presence of knee osteoarthritis 显示文摘Elena Losina Elizabeth ED A David Paltiel 2015PLoS One2015,10,01:1
12How information systems influence user decisions: A research framework and literature review显示文摘Ed O'Donnell Julie Smith David 2000International Journal of Accounting Information Systems2000,1,3:1
13Decreased creatine kinase is linked to diastolic dysfunction in rats with right heart failure induced by pulmonary artery hypertension显示文摘Ewan D. Fowler David Benoist Mark J. Drinkhill Rachel Stones Michiel Helmes Rob C.I. Wüst Ger J.M. Stienen Derek S. Steele Ed White 2015Journal of Molecular and Cellular Cardiology2015,,:1
14Chemistry,physical nature,and rheology of aqueous stimulation foams显示文摘David L Holcomb Ed Callaway Lynnl Curry 1981Society of Petroleum Engineers Journal1981,,4:1
15Designing Gabor filters for optimal texture separability显示文摘David A. Clausi M. Ed Jernigan 2000Pattern Recognition2000,,11:1
16Indoor environmental quality assessment models: A literature review and a proposed weighting and classification scheme显示文摘David Heinzerling Stefano Schiavon Tom Webster Ed Arens 2013Building and Environment2013,,:1
17The Science of Happiness 显示文摘Myers David Diener Ed 1997The Futurist1997,31,5:1
18Designing Gabor filters for optimal texture separability 显示文摘David A Clausi Jernigan M Ed 2000Pattern Recognition2000,33,11:1
19Mutual disambiguation of 3d multimodal interaction in augmented and virtual reality显示文摘ED KAISER ALEX OLWAL DAVID MCGEE etal 2003Proceedings of the 5th international conference on Multimodal interfaces2003,,11:1
20Angiotensin Ⅱ is mitogenic in neonatal rat cardiac fibroblasts 显示文摘Winfried S George WB David ED 1993Circ Res1993,72,6:1
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